jdf-webp-png A webp-png wrapper for JDF Install $ npm install --save jdf-webp-png Usage var execFile = require('child_process').execFile;var cwebp = require('jdf-webp-png'); execFile(cwebp, ['input.png', '-o', 'output.webp'], function (err) { if (err) { throw err; } console.log('Image is converted!');}); CLI $ npm install --global jdf-webp-png $ jdf-webp-png --help